Thursday, 31 January 2013

Basic Usage of Unity for Dependency Injection in MVC 4 Project

First, we need to install Unity Application Block library. If you use NuGet:
PM> install-package Unity.Mvc3
Yes, that is the correct version even for MVC 4 (at least at the time of writing).

Bootstrapper.cs file will be created in the project.

Next, inside Applicaton_Start() in Global.asax.cs, put this code:

Then register our components inside BuildUnityContainer() method in Bootstrapper.cs. For example:
        . . .
        container.RegisterType<IColourRepository, ColourRepository>();
        container.RegisterType<IInvoiceRepository, InvoiceRepository>();
        . . .

Calling container.RegisterControllers() in order to register controllers is no longer required in recent version.

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